This is a tab based off the official chords taken from the music video from the band itself.

CHORDS:
G    (320033)
C    (032010)
D    (000232)
Em   (022000)

VERSE 1:
G
Well momma never was no angel, 
                   C
Daddy never was no saint
                          G
There ain't a pretty childhood picture
                       D
these family lines can paint
G
This ain't no sob story 
                 C
This ain't no complaint
                         G
Hell, I'm proud of who I am
D               G
Proud of what I ain't

CHORUS:
            C
Cause I was born a bastard child, 
          G
Daddy run off and momma run wild
        D
I got a crooked cowboy smile
         G
I walk a crooked country mile
            C
Coulda done worse, shoulda done better
            G
Momma woulda tried if the bottle ever let her,
        D
I ain't prince or a pile,
                              G
ain't doing bad for a bastard child

VERSE 2:
G
I was a fathers only son of a bitch
                     C
one the family never claimed
                                 G
and you can bet I didn't grow up rich
                            D
and never really had a last name
          G
I bear the mark of the bastard child
                      C
but I wear it with no shame
                         G
for any good or bad I've done
              D              G
I'll take the credit and the blame

CHORUS:
            C
Cause I was born a bastard child, 
          G
Daddy run off and momma run wild
        D
I got a crooked cowboy smile
         G
I walk a crooked country mile
            C
Coulda done worse, shoulda done better
            G
Momma woulda tried if the bottle ever let her,
        D
I ain't prince or a pile,
                              G
ain't doing bad for a bastard child

BRIDGE:
           Em
Well I'm a son of the earth
  G
a real bad seed
    D
All I'll ever be worth 
            G
is all I'll ever need
         C
I'm just thankful for my birth
           D
and for my family

or else I wouldn't be me

CHORUS:
            C
Cause I was born a bastard child, 
          G
Daddy run off and momma run wild
        D
I got a crooked cowboy smile
         G
I walk a crooked country mile
            C
Coulda done worse, shoulda done better
            G
Momma woulda tried if the bottle ever let her,
        D
I ain't prince or a pile,
                              G
ain't doing bad for a bastard child
          D
I grew up fast, grew up wild,
                              G
ain't doing bad for a bastard child