Too foxing cold in Britain to do anything before May, and once June comes along every one's on foxing holiday

Strictly speaking that's not true. The holiday was the month of May, hence the Tudor song 'Now is the month of Maying'. Everything happens in May because that's when people had more daylight time to go walking out... Lambing and calving is finished, ploughing and planting is done, now is the time for some 'R&R'. If you get pregnant in May, you're still capable of helping with the harvest in August without too much danger, you've got the whole summer/autumn to eat well and give it a good start. By the time you can't move around so well, it's November/December and you can rest at home doing winter things. In January and February there were the spinning and weaving jobs you could do whilst sitting until the baby was born.

Babies are always 'bonny, beauteous, or sweet babes'... none of these adjectives apply in real life.

LTS