It took me a minute to decipher what "forenames" meant. In the USA we usually say first names. First names (and middle names) are also called "personal names".

Here's some information about the name "Lavan" which probably is a base name for the name "Lavon":

"LAVAN is from the Hebrew, meaning WHITE (Kolatch, Alfred J. 1984. The Complete Dictionary of English and Hebrew First Names. Middle Village: Jonathan David. 138).
LABAN is an Anglicized spelling.

Biblical name - Laban was a resident of PadanAram, son of Bethuel, brother of Rebekah [ the mother of Jacob and Esau] and father of Leah and Rachel (Genesis 28:2-5).

The Hebrew Letters featured in this piece are Lamed Beit Nun sophit. Taken together, and reading from right to left, they spell LAVAN."...

http://www.biblicalbabyname.com/item.cfm?itemid=3783

-snip-

That page provides much more information about the name masculine name "Lavan".

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Most African Americans are trend followers when it comes to personal names. There's plenty of documentation that our name creation and name conferring customs and rules are usually broader and different from "mainstream" American culture.

Among contemporary African Americans, the name "Lavan" is more likely to be "Lavon" since [for some reasons I don't know] both "La" which is pronounced "lah" and "von" which is pronounced like "vaughn" still fit African Americans' sound preferences.

My father's middle name was "Lavell" (the "el" ending used to be a sound preference that was popular among African Americans but its popularity has lessened since at least the 1950s. Also since the 1950s, African Americans usually consider personal names beginning with "La" to be feminine. "Lavonne" is an older variant of "Lavon". "Lavonda" (LaVonda) is a more contemporary "African American" variant of that name.

Among most African Americans, the meaning of a name is much less important than how the name sounds. How the name looks is also usually more important than what the name means. Note the capitalization of the first letter of the name LaVonda and the first letter of the second syllable. I believe that-at least in some African American cultures-the Hip Hop movement combined with the Phonics reading program have greatly influenced how some personal names are spelled and how they are written. "Black" personal names are often embellished by the addition of a hypen and/or a capital letter for the first letter of the second syllable, and (less often) an accent mark.

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Here's the entry for "Lavonda, Lavonne, Lavonna, Lavon; Lavonette" that is found on my website's pages for information about the origins & meanings of selected "non-traditional" names:

http://www.cocojams.com/names.htm

"Lavonda" is a form of the name "Lavonne". Other variants of this name are
Lavondra, Lavon, Lavonna, Lavonia. See this information about the meaning of Lavonne
http://www.babynameaddicts.com/html/names/female/female_l.html

"Lavonne, Yew; [origin] English"
-snip-

The yew is a type of evergreen tree. These trees were considered sacred in ancient times because they were symbols of long life since the trees are long lasting. Some ancient people also considered the yew evergreen tree to be a symbol of death because their leaves are quite poisonous.

A "bow" is the bow & arrow weapon. Wikipedia gives this information about the bows made of yew branches: "Yew is the wood of choice for longbow making and the bows are constructed so that the heartwood of yew is on the inside of the bow while the sapwood is on the outside. This takes advantage of the natural properties of yew wood since the heartwood is able to withstand compression while the sapwood is elastic and allows the bow to stretch. Both tend to return to their original straightness when the arrow is released". http://en.wikipedia.org/wiki/Taxus_baccata


-snip-

People given a name that means "yew tree" would take on the attributes of bows & arrows made from the yew tree. They would be long lived. They would be capable of taking care of themselves because they would be flexible, resilient, and, if need be, poisonous.

Also, see the entry on this page for the name "Yvonne" and its variants as these names have the same meaning as Lavonne.   Note: the name Lavonne may also be considered of French, Germanic origin.
-Wear your name proudly. Best wishes, Azizi!