Married for the first time, in May at age 39, Chrystyna Garrigan, a skin-care consultant from Montclair, N.J., considers herself a pretty modern woman. Smart, independent and cheerfully unconventional, she did not spend her childhood planning the perfect wedding or dreaming of white picket fences.
So her decision to drop her Italian last name (Dattilo) and take her husband's was not made lightly. ("What am I, Irish now, after 40 years?" she jokes.) Part of her wanted to carry on the name of her father, who died two years ago, and stick with the identity she had worked so hard to...