Including customized fonts (native) to WordPress?

I’ve this code:

@font-face {
    font-family: 'Miller Banner Gentle';
    src: url('fonts/Miller-Banner-Gentle-01.eot'); /* IE9 Compat Modes */
    src: url('fonts/Miller-Banner-Gentle-01.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
    url('fonts/Miller-Banner-Gentle-01.woff') format('woff'), /* Fairly Fashionable Browsers */
    url('fonts/Miller-Banner-Gentle-01.ttf')  format('truetype') /* Safari, Android, iOS */
}

Which in idea permits so as to add these fonts to my theme, sadly, merely creating the fonts folder and placing within the information does not work.

I examine having to create a child-theme however is that the one means?