Credit: SWNS / Marcella Hill

A married couple were astonished to discover they were actually COUSINS.

Marcella and Tage Hill, both 42, were browsing their respective family trees on an ancestry website called Family Search to get ideas for a name for their then-unborn first child.

At first they thought their great great grandma just had the same name - but soon the penny dropped that they were actually related.

Marcella and Tage discovered they had the same great-great-grandma, making them distant - or third - cousins.

Her grandpa and his grandma were first cousins.

Initially they were worried about the health of their unborn baby, because Marcella was pregnant.

But after getting reassurance there was no risk, they decided to name their daughter after their joint great-great-gran, Mary Jane Dollar.