siblings of Royal Highway xx

half siblings maternal 2 half siblings paternal 30

half siblings maternal

stallion Della Strada xx (Thoroughbred, 1958, from Nearcolein xx)

Della Strada xx
gender-male
1958

Nearcolein xx / His Highness xx

broodmare Eire xx (Thoroughbred, 1953, from Nicolaus xx)

Eire xx
gender-female
1953

Nicolaus xx / His Highness xx