Info from folktrax:

THANK YOU, MA'AM, SAYS DAN - "What brought you into my house?" - ROUD#3044 - HENRY SOP #184 & 689/ HUNTINGTON pp496-470 Gerald Crofts (w) Dublin & Joseph M Crofts (m), Dublin - O'LOCHLAINN ISB 1939 pp182-3 Dennis Devereux, Dublin

The following is from Colm O Lochlainn, Irish Street Ballads (1939, 1967, no. 92 [pp. 182-183]; with tune).

"I THANK YOU, MA'AM," SAYS DAN
(Learned from the late Denis Devereux who had it from the late P.J. MacCall, who contributed a version of the words to A Broadside, Cuala Press.)

"What brought you into my room, to my room, to my room?
What brought you into my room?" says the mistress unto Dan,
"I came here to court your daughter ma'am,
I thought it no great harm ma'am,"
"Oh, Dan, me dear, you're welcome here,"
"I thank you ma'am," says Dan.

"How come you to know my daughter, my daughter, my daughter?
How came you to know my daughter?" says the mistress unto Dan.
"Goin' to the well for water, ma'am,
To raise the can I taught her, ma'am."
"Oh, Dan, my dear, you're welcome here."
"I thank you ma'am," says Dan.

"Oh then, you can have my daughter, my daughter, my daughter,
I'll let you take my daughter," says the mistress unto Dan.
"And when you take my daughter, Dan,
Of course you'll take me also, Dan.
Oh, Dan, my dear, you're welcome here,"
"I thank you, ma'am," says Dan.

This couple they got married, got married, got married.
This couple they got married, Miss Elizabeth and Dan,
And now he keeps her mother and her father and his charmer, O.
And they're known throughout the country
By the name of "Thank ye, Ma'am."