in mexico, children uses two surenames one from the father and one for the mother. ie my firstname is juan ignacio cayetano and my sure name isNUNEZ CHAVEZ my father is jorge NUNEZ HURTADO my grand father was Indalecio NUNEZ MURO and my grand mother was Consuelo HURTADO VAZQUEZ my mother is Maria victoria CHAVEZ de la MORA my grand father was arturo CHAVEZ HAYHOE and my grand mother was Victoria de la MORA NAVARRETE,
when a woman marries, she changes her surenames and instead of her mothers name she takes husbands fathers surename.
this may look complicate.
this way you can trace your families very easy but when you use any software and you add children you have to retype all the surenames because children does not have the same suremnames as their father.
I hope you undersatnd my problem. also it looks that one of my ancestors moved to australia arrond 1800 he was an englishmanwhos name was James Hayhoe.
thanks for your help. juan ignacio nunez chavez firstname.lastname@example.org