R – Filtering data in a data frame (similar words and other cases)

I am trying to find out the best way to filter my data frame. I have this following data sample:

                        name       spouse 1                     Adanel      Belemir 19            Bodo Proudfoot              9                     Angrim              17                    Nurwë              25           Tar-Telemmaitë Unnamed wife 23            Tar-Vanimeldë    Herucalmo 5     Fire-drake of Gondolin              22         Tarannon Falastur   Berúthiel 2                    Boromir              10                  Anárion Unnamed wife 15                 Angelimar              11              Ar-Pharazôn  Tar-Míriel 12             Ar-Sakalthôr Unnamed wife 24            Tar-Telperiën         None 6             Ar-Adûnakhôr Unnamed wife 16                    Angbor              3                     Lagduf              4                     Tarcil Unnamed wife 8                     Angrod   Eldalótë 18 Linda (Baggins) Proudfoot              7                     Annael              21                 Pengolodh              13              Ar-Gimilzôr   Inzilbêth 20                    Penlod              14                 Angelimir Unnamed wife 

To treat the data and filter the empty spouse rows and rows that have invalid data like “Unnamed wife”, “none”, “None known” and others I am using this following code:

interacialMariage <-data %>% filter(spouse != "",spouse != "Unnamed wife", spouse != grepl("none",ignore.case = TRUE, spouse)) %>% select(name, spouse) 

I would like to know if there is any “contains” function that can help me to filter all words that start with “None” for example.

I’ve tried the grepl() function, but it didn’t work. If I create many (spouse != case ) for each case it will work, but I don’t think that it is the best way to do it.

Is there a way to optimize the way that I filter this data?

Thanks!