Don’t always assume convenience leads to conception! My great grandfather was illegitimate, born 10 months after the 1861 census. His mother was a servant in a household of an elderly couple and there was also a farm servant, age 21 to her 19. Hello! I thought, he might have been the father of young William. When my DNA results, along with my brother’s, came in, there was absolutely no matches to the young man’s line. I have however, quite a few matches on a couple of other surnames in the village, and hope to work it out soon. I have some suspicions that the father was also named William.
My mother was also born to a single mother and with the DNA testing I am quite confident I have identified my grandfather was one of three brothers (from that same village).