Very classy list!
I'll go with...R
1.
Ruby2.
Roxanna3.
Rosemary4.
Rowena5.
Rosalind6.
Rosamund7.
Rhea8.
Raquel9.
Rosalba10.
Ramona11.
Ravenna12.
Rex13.
Rupert14.
Ramsey15.
Roger16.
Roscoe17.
Ronan18.
Raoul19.
Riordan
My boys sound like hellions, which is fitting. In real life I wouldn't use so many
Ros- names in a set, but in real life I'd never have 19 kids, so...ROSES EVERYWHERE