Parents celebrated on lace bobbins

Many lace bobbins celebrate relationships and these include parents. In some cases the bobbins were gifts from parents such as the bobbin on the left made by Jesse Compton which is inscribed ‘A present from my father 1836’. The date on this one is hard to read I wasn’t sure whether it was 1886 or 1836 but as Jesse Compton died in 1857 I’m assuming it’s the earlier date. Others, like the two following bobbins, are simpler and just say ‘Dear father’ or ‘Dear mother’. The next bobbin, which I think was made by Bobbin Brown of Cranfield, is inscribed ‘My dear father’. These would have been stock bobbins held by the bobbin makers but, the last bobbin, ‘Sarah Ions my d[ear] mother’ is a more personal message and would have been made specially for the lacemaker who ordered it. I love these old bobbins and the messages they convey. Do they commemorate special events such as birthdays or were they bought as thank you gifts? I wish I knew more about their history.