Here is a royal descent for the famous soccer player Cristiano Ronaldo from Alfonso X of Leon and Castile. 
Actually, there are two lines that split and reconverge. 

Alfonso X
Fernando de la Cerda 
Alfonso de la Cerda 
Luis de la Cerda 
Juan de la Cerda y Guzman 
Martin Gonzalez de la Cerda 
Isabel Pereira de la Cerda 
Goncalves Aires Ferreira
Gaspar Goncalves Ferreira
Grimazena Goncalves Ferreira 
Mecia Ferreira 
Ana Ferreira de Castro 
Ana Ferreira 
Sebastiao Coelho 
Francisco Alvares Coelho 
Duarte Teixeira de Vasconcelos 
Francisco de Vasconcelos Lomelino
Francisca Bernarda de Bettencourt de Freitas 
Manuel Ferreira Lomelino
Joao Jose Lomelino
Ludovina Joaquina 
Joana de Jesus
Maria de Jesus 
Jose de Aveiro 
Humberto Cirilo de Aveiro 
Jose Dinis de Aveiro 
Cristiano Ronaldo dos Santos Aveiro 

Goncalves Aires Ferreira 
Eva Gomes Ferreira 
Brites Vaz Ferreira 
Pedro Teixeira 
Ana Teixeira 
Catarina Escorcio 
Antonio Teixeira Escorcio 
Maria Escorcio 
Francisco Alvares Coelho (the lines reconverge)